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8afab607ac
This is similar to a scheduler I've written for vc4 and i965, but this
time written at the NIR level so that hopefully it's reusable. A notable
new feature it has is Goodman/Hsu's heuristic of "once we've started
processing the uses of a value, prioritize processing the rest of their
uses", which should help avoid the heuristic otherwise making such
systematically bad choices around getting texture results consumed.
Results for v3d:
total instructions in shared programs: 6497588 -> 6518242 (0.32%)
total threads in shared programs: 154000 -> 152828 (-0.76%)
total uniforms in shared programs: 2119629 -> 2068681 (-2.40%)
total spills in shared programs: 4984 -> 472 (-90.53%)
total fills in shared programs: 6418 -> 1546 (-75.91%)
Acked-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com> (v1)
Reviewed-by: Alejandro Piñeiro <apinheiro@igalia.com> (v2)
v2: Use the DAG datastructure, fold in the scheduling-for-parallelism
patch, include SSA defs in live values so we can switch to bottom-up
if we want.
v3: Squash in improvements from Alejandro Piñeiro for getting V3D to
successfully register allocate on GLES3.1 dEQP. Make sure that
discards don't move after store_output. Comment spelling fix.
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|---|---|---|
| .. | ||
| meson.build | ||
| nir_to_vir.c | ||
| qpu_schedule.c | ||
| qpu_validate.c | ||
| v3d33_tex.c | ||
| v3d33_vpm_setup.c | ||
| v3d40_tex.c | ||
| v3d_compiler.h | ||
| v3d_nir_lower_image_load_store.c | ||
| v3d_nir_lower_io.c | ||
| v3d_nir_lower_logic_ops.c | ||
| v3d_nir_lower_scratch.c | ||
| v3d_nir_lower_txf_ms.c | ||
| vir.c | ||
| vir_dump.c | ||
| vir_live_variables.c | ||
| vir_opt_copy_propagate.c | ||
| vir_opt_dead_code.c | ||
| vir_opt_redundant_flags.c | ||
| vir_opt_small_immediates.c | ||
| vir_register_allocate.c | ||
| vir_to_qpu.c | ||